chalmers



Oct. 22, 1929.

.1. CHALMERS RADIATOR Filed Nov. 18, 1927 INV ENTOR JOH N. CHALMER s ATTORNEY Patented @ct. 22, 1929 TENT FEQE JOHN CHALMER-S, OF MONTREAL, QUEBEC, CANADA RADIATOR Application filed November 18, 1927.

This invention relates to new and useful improvements in radiators for heating buildings and the like, and the object of the invention is to provide a simple and inexpensive radiator of compact construction which will have largo heat radiating surface and through which air will circulate freely to heat the surrounding atmosphere.

Another object is to provide a radiator having incorporated therein means which will eep the air in the room at the proper humidity or state of moisture.

According to my invention I provide a plurality of concentric tubes secured to top and bottom headers. The tubes are arranged to form comparatively small fluid channels and large air channels, so that a comparatively large amount of air circulates there through. The top header is provided with so n'ieans to support and position a humidifier. A suitable hood may be provided for spread ing and distributing the heated air throughout the room.

In the drawing which illustrates one form 25 of my invention 2-- Figure 1 is a central vertical sectional view of my improved type of radiator.

Figure 2 is a plan view of the radiator with the hood removed.

Figure 3 is a sectional plan of the radiator taken on the line Figure 4 is a sectional plan of the radiator taken on the line 4-4 Figure 1.

Referring more particularly to the drawings, 11 designates the bottom outer header which may have formed integral therewith,

or attached thereto, suitable supports 12.

The inner upper edge 13 of the ring is made slightly larger in diameter than the lower 41? edge 14. A suitable inlet pipe 15 is provided on the outer surface of the ring. Fitting into the upper edge of the ring and extending upwardly therefrom is the tube 16 which may be welded at 17 to form a fluid tight joint. A tube 18 is welded to the lower edge of the ing or header. The tube 18 is slightly smaller in diameter than the pipe 16 and a fluid circulating space 19 is formed between them. The upper ed yes 20 and 21 of the tubes are secured to an upper header 22 by welding.

Serial No. 234,272.

The upper header is preferably formed of three rings, the outer ring 23 being connected to the inner ring 24 by means of the channel 25 and to the intermediate ring 26 by means of the channel 27. It will be seen that the aforementioned tubes when connected to the upper header form an outer or distributing chamber 28 at the top of the radiator. The inner water channel 29 is formed between the tubular members 30 and 31, the upper edges of 'which are welded to the edges 32 and 33 of the inner ring 24 to form a central chamber The lower edges of the tubular members 30 and 31 are connected to bottom inner header 85 which comprises two rings 36 and 37 connected together by means of a fluid channel 38. A suitable outlet pipe 39 is connected to the inner tubular member 30. The header has an inner outlet chamber 40 formed between the tubes 30 and 31 and the inner ring 36. An intermediate water channel is formed between the inner and outer walls of the intermediate tubular members 41 and 42, the upper edges of which are secured to the intermediate ring of the upper header to form an intermediate chamber 43 at the top. A chamber 44 is formed between the tubes 41 and 42 and the ring 37. Chamber 43 communicates with the chamber 40 by means of the passageway or channel 38. Fitting into the inner tube is the flange 44 and depending from said flange is the water cistern or humidifier 45. A perforated hood 46 may be mounted over the upper header to distribute the air passing through the radiator. The tubes forming each water channel are spaced closely together so that a thin film of fluid passes therethrough to heat the air passing through the comparatively large air channels 47,48 and 49. The upper header is made in two sections which may be bolted together at the flanges 50 by means of the bolts 51. In the drawings I have shown one outer heating fluid channel and two inner fluid channels, but this number of channels may be modified without departing from the spirit of the invention.

In operation the steam, water, or such like heating fluid, is fed into the outer lower chamber and passes upwardly in the direction indicated by the arrows, between the outer tubes into the upper header or distributing chamber. The fluid is then distributed into the central tubes and passes downwardly and out through the discharge pipe connected to the inner lower chamber. It will be seen that the heating fluid passes through the radiator in the form of a thin film. The outer fluid channels are preferably made of practically the same area as the combined areas of the inner channels, so that the flow through the radiator is smooth. The air spaces are comparatively large and the radiator surfaces are also large, so that a comparatively large volume of air is circulated through the radiator into the room. By arranging the passageways in the form of a series of concentric tubes, the device may be made compact and neat in appearance. The flow of air is upwardly and the heated air is deflected by means of the hood. The humiditier is incorporated in the radiator so that moistened air is supplied to the room in proportion to the heat of the radiator. The device is very easily assembled and all joints are welded or brazed to make them fluid tight.

Having thus described my invention, what I claim is 1. In aradiator, an outer lower header, an inlet connection thereto, an upper header, a pair of concentric tubes forming an outer fluid conducting channel between the header, a plurality of concentric tubes spaced from one another and forming between them alternate fluid and air spaces, said tubes being suspended from the upper header and supporting an outlet chamber, channels in the chamber connecting the last-mentioned fluid channels, channels in the upper header connecting the outer fluid channels with the other fluid channels, and an outlet from the outlet chamber.

2. A radiator comprising a lower header, an outer ring, an inlet thereto, an upper header comprising three concentric rings, a pair of concentric tubes connecting the lower header ring with the outer ring of the upper header, channels forming a fluid connection between the outer rings and the inner rings, a pair of lower rings connected together by a fluid channel and suspended. on a plurality of concentric tubes forming alternate fluid and air conducting channels, and an outlet pipe from the inner lower ring.

3. In a radiator, a lower header comprising a plurality of concentric rings, an upper header comprising a plurality of concentric rings, channel means connecting the outer rings with the inner rings of the upper header, channel means connecting the inner rings of the lower header, and a plurality of vertically disposed concentric pipes connecting the rings of the upper header with those of the lower header and forming alternate air and fluid conducting spaces, an inlet to the outer ring of the lower header, an outlet from the inner ring of the same header, and a water tank suspended on the inner ring.

4-. A radiator comprising upper and lower series oi concentric headers, each series including outer, inner and intermediate headers, separate passageways connecting the up per outer header to the upper inner and intermediate headers. a passageway connecting the lower inner header and the lower intermediate header, an inlet pipe connected to the lower outer header and an outlet pipe connected to the lower inner header, a pair of spaced tubes arranged to form an annular passage connecting the upper and lower outer headers, a second pair of spaced tubes arranged to term an annular passage connecting the upper and low r intermediate headers, and a third pair of spaced tubes arranged in form an annular passage connecting the inner, upper and lower headers, the several pairs of tubes being spaced apart to define intervc-ni air passages.

In witness whereof, Ihave hereunto set my h and.

JOHN CHALMERS. 

